Behavioral and physiological responses to instability in group membership in wild male woolly monkeys ( Lagothrix lagotricha poeppigii )
Behavioral and physiological responses to instability in group membership in wild male woolly monkeys ( Lagothrix lagotricha poeppigii )
复制标题
野生雄性毛猴（Lagothrix lagotricha poeppigii）对群体成员不稳定的行为和生理反应
DOI：
10.1002/ajp.23240
复制
发表时间：
2021
影响因子：
2.4
通讯作者：
Lu, Amy
中科院分区：
文献类型：
--
作者：
Pain, Evelyn L.;Koenig, Andreas;Di Fiore, Anthony;Lu, Amy
在群居物种中，在分散后融入一个新的社会群体是一个重要的生活史里程碑，与身体和社会挑战有关。一般来说，这一过程似乎伴随着糖皮质激素(GC)浓度的升高；然而，大多数关于群体转移的生理反应的研究都是在具有专制社会关系的物种上进行的，在这些物种中，融合的个体往往是频繁攻击的目标。在这里，我们提供了雄性绒猴(Lagothrix Lagotricha Poepigii)在群体成员不稳定时期粪便糖皮质激素(FGC)浓度的数据，这是一种具有极低的雄性-雄性攻击率和普遍容忍的雄性-雄性协会的物种。我们在厄瓜多尔的Tiputini生物多样性站收集了四个研究小组的男性数据，并在一个研究小组中观察到三次试图转移的事件，总共涉及四名成年男性。在整个研究期间，我们只观察到三次男性之间的公开攻击(追逐)，尽管男性的展示行为更频繁。我们使用广义线性混合模型(LMM)测试了群体成员不稳定时期的显示率是否更高。我们还使用LMM检查了男性状态、群体稳定性和群体间相遇的发生是否影响FGC浓度。与我们的预测相反，在群体成员关系不稳定的时期，展示行为的比率并不高。然而，在这些不稳定的时期，暂时性/融合性男性和那些已经是群体成员的男性都显示出FGC浓度升高。我们的结果表明，即使在具有宽容的男性-男性关系的物种中，陌生个体的整合也会刺激GC的增加。
In group‐living species, integrating into a new social group after dispersal is an important life history milestone associated with physical and social challenges. Generally, this process seems to be accompanied by heightened glucocorticoid (GC) concentrations; however, most studies of physiological responses to group transfer have been conducted on species with despotic social relationships, where integrating individuals are often targets of frequent aggression. Here we present data on fecal glucocorticoid (fGC) concentrations during periods of unstable group membership for male woolly monkeys (Lagothrix lagotricha poeppigii), a species with extremely low rates of male–male aggression and generally tolerant male–male associations. We collected data on males in four study groups at the Tiputini Biodiversity Station, Ecuador, and observed three attempted transfer events, involving a total of four adult males, in one study group. We observed only three instances of overt aggression (chases) between males across the entire study period, though male display behaviors were more frequent. We tested whether rates of displays were higher during periods of unstable group membership using a generalized linear mixed model (LMM). We also examined whether male status, group stability, and the occurrence of intergroup encounters affected fGC concentrations using LMMs. Contrary to our predictions, rates of display behaviors were not higher during periods of unstable group membership. However, both transient/integrating males and those who were already group members showed elevated fGC concentrations during these unstable periods. Our results suggest that even in species with tolerant male–male relationships, the integration of unfamiliar individuals can provoke an increase in GCs.